Steroids Prohibited in MLB Since 1991So MLB Will Investigate Back to 2002

"The probe launched Thursday initially will be limited to events since September 2002, when the sport banned performance-enhancing drugs, but Mitchell has the authority to expand it."-- 3.31, Chief of Steroids Probe Criticized

MLB's 1991 Drug Policy

"The possession, sale or use of any illegal drug or controlled substance by Major League players and personnel is strictly prohibited... (and those players involved) are subject to discipline by the Commissioner and risk permanent expulsion from the game... This prohibition applies to all illegal drugs and controlled substances, including steroids..." -- Francis T. Vincent, Jr., Commissioner of Major League Baseball (1991)